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Finding the Fourth Proportional to 103,672.77, 142,937.64 and 67,805.97

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Solution

The fourth proportional to 103,672.77, 142,937.64 and 67,805.97 is: 93,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.77 : 142,937.64 = 67,805.97 : x
  2. Step 2: Convert to fraction form
    103,672.77/142,937.64 = 67,805.97/x
  3. Step 3: Cross multiply
    103,672.77x = 142,937.64 × 67,805.97
  4. Step 4: Simplify right side
    103,672.77x = 9,692,025,329.71
  5. Step 5: Solve for x
    x = 9,692,025,329.71/103,672.77
  6. Step 6: Final answer
    x = 93,486.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.